---
title: extensionContext
framework: authenticationservices
role: symbol
role_heading: Instance Property
path: authenticationservices/asaccountauthenticationmodificationviewcontroller/extensioncontext
---

# extensionContext

The context your account authentication modification extension uses to provide information to the system.

## Declaration

```swift
var extensionContext: ASAccountAuthenticationModificationExtensionContext { get }
```

## Mentioned in

Upgrading Account Security With an Account Authentication Modification Extension

## Discussion

Discussion Your extension uses the extension context to communicate with the system during the upgrade process.